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STMicroelectronics STM32L476RGT6TR
- Part No.:
- STM32L476RGT6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32L476RGT6TR.pdf
- Description:
- IC MCU 32BIT 1MB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,161
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Product details
Overview
STM32L476RGT6TR from STMicroelectronics is an ultra-low-power Arm® Cortex®-M4 32-bit MCU with FPU, operating up to 80 MHz (100 DMIPS), featuring 1 MB flash, 128 KB SRAM, USB OTG FS, LCD controller, and integrated SMPS support. It targets battery-powered IoT edge nodes, portable medical devices, and energy-harvesting sensor hubs requiring sub-µA standby current and robust analog integration.
For engineers reviewing the STM32L476RGT6TR datasheet, STM32L476RGT6TR pinout, STM32L476RGT6TR application, or STM32L476RGT6TR equivalent, key selection criteria include its 39 µA/MHz SMPS-run efficiency, dual 12-bit DACs with sample-and-hold, 3× 12-bit ADCs (5 Msps), 24-channel capacitive touch sensing, and LQFP64 package compatibility with industrial temperature range (–40 °C to +85 °C).
Technical Context
The device integrates an Adaptive Real-time Accelerator (ART™) enabling zero-wait-state execution from flash at 80 MHz, alongside a memory protection unit (MPU) and interconnect matrix for deterministic peripheral arbitration. Its power architecture supports dual supply schemes: internal LDO or external SMPS, with dedicated VDD12 rail for core voltage scaling.
Low-power operation is enabled by seven defined modes - including Shutdown (30 nA), Standby with RTC (420 nA), and Stop 2 (1.1 µA) - all with configurable wakeup sources and hardware calendar-based RTC. The analog subsystem includes two operational amplifiers with programmable gain, two ultra-low-power comparators, and a DFSDM interface for sigma-delta sensor interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M4 with FPU, 80 MHz max, 100 DMIPS - enables real-time DSP and control algorithms without external co-processor |
| Memory | 1 MB dual-bank flash (read-while-write), 128 KB SRAM (32 KB with parity) - supports secure firmware updates and fault-tolerant data logging |
| Power Efficiency | 39 µA/MHz in SMPS mode @ 3.3 V - reduces battery drain in always-on sensor nodes |
| Analog Peripherals | 3× 12-bit ADCs (5 Msps), 2× 12-bit DACs, 2× OPAMPs, 2× comparators - enables closed-loop analog signal conditioning and actuator control |
| Connectivity | USB OTG FS, CAN 2.0B, 5× USART, 3× SPI, 3× I²C, SDMMC, SAI - supports wired/wireless gateway bridging and motor drive interfaces |
| Package | LQFP64 (10 × 10 mm), ECOPACK2-compliant - compatible with standard PCB assembly and industrial thermal requirements |
| Temperature Range | –40 °C to +85 °C - qualified for extended outdoor and factory-floor deployment |
Pinout & Package
LQFP64 package (10 × 10 mm, 0.5 mm pitch), 64-pin quad flat pack with exposed thermal pad; RoHS-compliant and ECOPACK2 certified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Core power supply and ground | Supports dual supply scheme: internal LDO or external SMPS (VDD12); decoupling critical for low-noise analog operation |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PE0–PE15 | General-purpose I/Os | Up to 51 fast I/Os (most 5 V-tolerant); multiple alternate functions per pin enable flexible peripheral mapping |
| PA1, PA2, PA3, PA4, PA5, PA6, PA7, PB0, PB1, PB10, PB11, PC0–PC5, PC10, PC11, PD2, PE0–PE7 | Analog input channels | Supports simultaneous sampling across 3 ADCs; dedicated VREF+ and VREF– pins enable precision ratiometric measurements |
| PA4, PA5, PA6, PA7, PB0, PB1 | DAC output / OPAMP output | Two independent DAC outputs with integrated sample-and-hold; OPAMPs configurable as PGA or buffer for sensor front-end gain |
| PA9, PA10, PB14, PB15, PC11, PC12, PD11, PD12 | USB OTG FS interface | Full-speed USB transceiver with integrated PHY; requires precise 1.2 V and 3.3 V supplies and ESD protection layout |
| PA11, PA12, PB8, PB9 | CAN TX/RX | CAN 2.0B physical layer interface; requires external transceiver and common-mode choke for bus compliance |
Key Features
| Feature | Design Value |
|---|---|
| FlexPowerControl architecture | Enables 30 nA shutdown and 420 nA standby with RTC - extends coin-cell life beyond 10 years in maintenance-free sensors |
| ART Accelerator™ | Zero-wait-state flash execution at 80 MHz - eliminates cache misses in time-critical control loops |
| Capacitive touch sensing (TSC) | 24-channel hardware-accelerated touch controller - supports slider, wheel, and proximity detection without CPU overhead |
| LCD controller | Drives 8×40 or 4×44 segments with integrated step-up converter - eliminates external bias generator in portable displays |
| DFSDM interface | 4 digital filters for sigma-delta modulators - enables high-resolution current/voltage measurement with oversampling noise reduction |
Applications
| Smart Utility Meter | Portable ECG Monitor |
|---|---|
Use Scenario: Battery-powered electricity/water/gas meter with tamper detection, RF communication, and real-time tariff calculation. IC Role / Device Role / Timing Role: Main system controller managing metrology ADC sampling, secure firmware updates, and LoRaWAN/RFM radio interface timing. Use Value: Sub-µA Stop mode and hardware RTC calendar enable accurate billing over 15-year deployments without battery replacement. | Use Scenario: Handheld clinical-grade ECG device with dry-electrode sensing, Bluetooth LE telemetry, and on-device arrhythmia analysis. IC Role / Device Role / Timing Role: Signal acquisition hub synchronizing 3× 12-bit ADCs (lead I/II/III), processing QRS detection via CMSIS-DSP, and driving OLED display. Use Value: Integrated OPAMPs and DACs eliminate external analog front-end ICs; 39 µA/MHz SMPS efficiency extends single-charge runtime to >72 hours. |
| Industrial Wireless Sensor Node | Energy-Harvesting HVAC Controller |
Use Scenario: DIN-rail mounted vibration/temperature/humidity node transmitting data via NB-IoT to cloud SCADA systems. IC Role / Device Role / Timing Role: Edge intelligence processor executing predictive maintenance ML inference (TinyML), managing CAN bus to field actuators, and scheduling LPWAN transmissions. Use Value: Dual-bank flash enables A/B firmware updates without downtime; 51 GPIOs support modular sensor expansion via standardized headers. | Use Scenario: Solar-powered HVAC zone controller using thermoelectric generator (TEG) harvesting, driving stepper valves and reporting occupancy via Zigbee. IC Role / Device Role / Timing Role: Ultra-low-power supervisor coordinating energy harvesting management, PID loop execution, and wireless stack sleep/wakeup cycles. Use Value: 30 nA shutdown mode allows full system hibernation between HVAC demand events; internal SMPS interface maximizes conversion efficiency from <100 mW input. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32L432KCU6 | 64 KB flash, 16 KB SRAM, no LCD, no DFSDM, LQFP32 package | Targeted at cost-sensitive, space-constrained control-only tasks (e.g., smart switch, basic sensor node) | Select when full analog integration and large memory are unnecessary; lower BOM cost but reduced feature headroom |
| STM32U575ZIT6 | ARM Cortex-M33, TrustZone, 2 MB flash, 786 KB SRAM, 1.5x higher DMIPS, -40°C to +125°C | Designed for functional safety (IEC 61508 SIL2) and secure boot in industrial automation gateways | Choose for next-gen designs requiring PSA Level 3 certification, higher compute density, and extended temperature resilience |
Compared with STM32L432KCU6, the STM32L476RGT6TR provides 16× more flash and integrated LCD/DFSDM for richer HMI and precision sensor fusion; versus STM32U575ZIT6, it offers proven L4-series toolchain maturity and lower power in sub-100 µA modes, trading security extensions for simpler certification paths.
Availability
STM32L476RGT6TR is available at Aetrix Electronics and suitable for smart utility meters, portable medical devices, industrial wireless sensor nodes, and energy-harvesting HVAC controllers requiring stable component supply across multi-year production cycles.
Supply support for STM32L476RGT6TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, MEMS, and automotive semiconductors since 1987.
The STM32L4 series targets ultra-low-power embedded applications demanding high performance-per-milliwatt, with design focus on battery longevity, rich analog integration, and seamless migration from legacy 8-/16-bit platforms.
FAQ
What is the maximum operating frequency and corresponding power consumption in Run mode?
The STM32L476RGT6TR operates at up to 80 MHz. In Run mode with ART Accelerator enabled and power supplied by external SMPS, it consumes 39 µA/MHz at 3.3 V - measured with code executing from flash and prefetch disabled. This value scales linearly with active clock frequency and reflects typical conditions per DS10198 Rev 11 Table 28.
Does this MCU support hardware encryption or secure boot features?
No, the STM32L476RGT6TR does not include hardware cryptographic accelerators (AES, PKA) or secure boot ROM. It supports software-based encryption via CMSIS libraries and readout protection (RDP) Level 1/2 for flash confidentiality. For hardware security, ST recommends the STM32L5 or STM32U5 series with TrustZone and AES-256 engines.
Can the internal SMPS be used with the LQFP64 package?
Yes, the LQFP64 package (pinout variant 'R') supports external SMPS integration via dedicated VDD12 and VDDA12 pins. The internal regulator bypass mode allows direct connection to an external DC-DC converter, reducing total system power by ~60% compared to LDO operation - confirmed in Section 3.9.3 and Table 28 of DS10198 Rev 11.
What development tools are officially supported for firmware debugging and programming?
ST officially supports STM32CubeIDE, STM32CubeMX, and ST-LINK/V2-1 debug probes for programming and SWD-based debugging. The device implements Serial Wire Debug (SWD) and JTAG interfaces per Section 3.37.1, with full trace capability via Embedded Trace Macrocell™ (ETM) for real-time instruction flow analysis during development.
STM32L476RGT6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-LQFP
- Series:
- STM32L4
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M4
- Core Size:
- 32-Bit Single-Core
- Speed:
- 80MHz
- Connectivity:
- CANbus, I2C, IrDA, LINbus, MMC/SD, QSPI, SAI, SPI, SWPMI, UART/USART, USB OTG
- Peripherals:
- Brown-out Detect/Reset, DMA, LCD, PWM, WDT
- Number of I/O:
- 51
- Program Memory Size:
- 1MB (1M x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 128K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.71V ~ 3.6V
- Data Converters:
- A/D 16x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L476RGT6TR FAQ
1.How can I place an order for STM32L476RGT6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L476RGT6TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STM32L476RGT6TR reliable?
The price and inventory of STM32L476RGT6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L476RGT6TR is usually 5 days.
3.What payment methods are accepted for STM32L476RGT6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L476RGT6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L476RGT6TR?
STM32L476RGT6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L476RGT6TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STM32L476RGT6TR?
For technical support, including STM32L476RGT6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L476RGT6TR requirements.
6.How does Aetrix verify that STM32L476RGT6TR is sourced from the original manufacturer or authorized distributors?
All STM32L476RGT6TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32L476RGT6TR meets industry standards.
7.What is the process for return or replacement of STM32L476RGT6TR?
All STM32L476RGT6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32L476RGT6TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STM32L476RGT6TR part is unused and in its original packaging.
Return procedure for STM32L476RGT6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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